Stephen Sherwin
Medical Oncology · San Francisco, CANPI 1437461431
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $6,752,097 of the $6,879,066 with a category attached, or 98.2%. 5 manufacturers reported payments, led by Neurocrine Biosciences, Inc. at 49.1% of the total. Among medical oncology clinicians in CA with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 336 payments — averaging $20,473 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Neurocrine Biosciences, Inc.$3.4M
- Biogen$2.7M
- Exelixis Inc.$718K
- AbbVie$33K
- Verastem, Inc.$14K
What the payments were for
- Consulting fees$6,752,09798%
- Travel & lodging$85,1741%
- Food & beverage$8,7570%
- Other$33,0380%
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Neurocrine Biosciences, Inc. | 234 | $3,379,695 |
| Biogen | 64 | $2,735,214 |
| Exelixis Inc. | 29 | $717,505 |
| AbbVie | 3 | $33,038 |
| Verastem, Inc. | 6 | $13,614 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
- Cabometyx$270,000
- Cabozantinib$240,000
- Copiktra$13,528
How this compares
$6,879,066 in reported general payments places this provider in the 95th percentile of 379 medical oncology providers in California.
Other medical oncology in San Francisco
- John ParkSan Francisco$558K
- Kevin KimSan Francisco$176K
- Aman ChauhanSan Francisco$99K
- Ana Velazquez MananaSan Francisco$90K
- Noam DrazinBeverly Hills$1.4M
- Farshid DayyaniOrange$1.2M
- April TeitelbaumSan Diego$1.1M
- Przemyslaw TwardowskiSanta Monica$995K
- Ann LowePalo Alto$923K
- Marin XavierSan Diego$919K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.